1320202401 has 16 divisors (see below), whose sum is σ = 2026214400. Its totient is φ = 748972368.

The previous prime is 1320202393. The next prime is 1320202421. The reversal of 1320202401 is 1042020231.

It is not a de Polignac number, because 1320202401 - 2³ = 1320202393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1320202421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 223221 + ... + 229058.

It is an arithmetic number, because the mean of its divisors is an integer number (126638400).

Almost surely, 2^1320202401 is an apocalyptic number.

It is an amenable number.

1320202401 is a deficient number, since it is larger than the sum of its proper divisors (706011999).

1320202401 is a wasteful number, since it uses less digits than its factorization.

1320202401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452428.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 1320202401 is about 36334.5895944897. The cubic root of 1320202401 is about 1097.0173748095.

Adding to 1320202401 its reverse (1042020231), we get a palindrome (2362222632).

It can be divided in two parts, 132020 and 2401, that added together give a triangular number (134421 = T₅₁₈).

The spelling of 1320202401 in words is "one billion, three hundred twenty million, two hundred two thousand, four hundred one".